Ice-cream freezer



(No Model) W. J. SHEPARD.

ICB CREAM PREEZER. No. 448,375. 'Patented Mar. 17, 1891.

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UNITED. STATES ,PATENT FFICE.,

VALTER J. SHEPARD, OF BUFFALO, NET YORK.

ICE-CREAM FREEZER.

SPECIFICATION forming part of Letters :Patent No. 448,375, dated March17, 18911.

Application iiled December 15, 1890. Serial No. 374,736. (No model.)

To all whom, t may concern:

Be it known that I, WALTER J. SHEPARD, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Ice-Cream Freezers, of which thefollowing is a specification,

vThis invention relates to that class of icecream freezers in which thescraper adjusts itself automatically to the inside of the creamcan.lleret-ofore this adjustment has been effected by interposing springsbetween the scraper and the actuatingspindle. It has also been proposedto connect the scraper with the spindle by levers in such manner thatthe weight of the scraper would cause it to bear against the inside ofthe can. These devices are objectionable because the numerous parts aredifficult to clean and are necessarily cumbersome and liable to get outof order.

The object of my invention vis to provide simple mechanism whereby theweight of the scraper is utilized for pressing the latter against theinner side of the cream-can.

In the accompanying drawings, Figure l is a sectional elevation of acream-freezing can provided with my improved scraper. Fig. 2 is afragmentary elevation showing the reverse side of the scraper and itssupports. Fig. 3 is a horizontal section in line x fr, Fig. l,lookingdownward. Fig. 4 is a similar fragmentary section in line y y, Fig. l,looking upward. Fig. 5 is an elevation of the upper arm of the scraper.Fig. G is a bottom plan view thereof. Fig. 7 is a fragmentary elevationof the bracket supporting the upper arm of the scraper. Fig. 8 is a topplan view thereof.

Like letters of reference refer to like parts in the several figures.

A represents the cream-can, which is immersed in the freezing' mixturecontained in a wooden tub and provided at its bottom with a stud orjournal a., which turns in a socket or step-bearing arranged in thebottom of the tub in the usual manner.

B is the cover of the cream-can, and C is the vertical shaft or spindleon which the dasher c and the scraper D are pivotally supported. Theshaft is supported at its lower end in a step-bearing d, secured to thebottom of the cream-can and passes with its upper end through an openingin the cover B. The cream-can is revolved and the shaft is heldstationary; but, if desired, the can and the shaft may be revolved inopposite directions in any suitable and well-known manner.

g g represent laterally-extending brackets form ed ou the shaft andsupporting the upper and lower ends of the scraper. These brackets arearranged near the upper and lower ends of the shaft and extend,preferably, in a diametrically-opposite direction from the armssupporting the dasher.

Il Il represent arms secured to the upper `and lower ends of the scraperand pivoted to the brackets g g', so that the scraper is enabled toswing on a vertical axis toward and from the inner side of thecream-can. The lower arm H is provided with a vertical plate h', bywhich it is secured to the lower rear side of the wooden scraper, andhas an eye or socket by which it turns on a depending pin I, formed onthe outer end of the lower bracket g. The upper arm H is provided with avertical plate 7t,'by which it is secured to the upper rear side of thewooden scraper, and has an eye or socket by which it turns on an uprightpin J, formed on the outer end of the upper bracket g. The scraperswings on these vertical hin ge-pins towardvand from the inner side ofthe can.

K represents an incline formed on the lower side of the upper arm H,adjacent to the front side of its eye, and m is a similar incline formedon the upperside of the upperbracket at the base of the pin. Theseinelines slope outwardly, or toward the can, and cause the scraper toexert a constant pressure against the -inside of the can, owing to thetendency of the scraper to gravitate down the inclincs and in so doing`swing outwardly ou its pivots.-

lf the can has been indented so as to present irregularities on itsinner side, the scraper upon striking the same will swing forwardly onits pivots and ride upwardly on the incline m, and upon clearing theobstruction will ride down over the incline and swing backwardly on itspivots, thereby automatically adjusting itself to any irregularitieswhich may exist in the interior of the can and in- IOO suriirg,` aremoval of the frozen cream before it has unduly accumulated. The upwardmovement of the scraper is limited by its lower arm striking against theunder side of the lower bracket. The backward movement of the scraper islimited by the rear side of the upper arm striking against a projectingnose on the upper bracket M, as represented `in Fig. 4. It is obviousthat one of the inclines may be omitted by making the contactsurface ot'the other part comparatively narrow; but I prefer to use both inclines,as they afford a firmer support for the scraper in its movements.

I claim as my inventionl. The combination, with the can, of a scraper, asupport to which the scraper is pivscraper, a support to which thescraper is pivoted, an inclined face or cam formed on said support, anda similar incline formed on the scraper and resting on the incline ofthe support, substantially as set forth.

Witness my hand this 12th day of December, 1890.

l1-HIPER J. SHEPARD.

Witnesses:

C. E. KINNEEN, JOSEPH N. WEIG.

